From bf3c4d72a0fda38561376eac7eda216158783267 Mon Sep 17 00:00:00 2001
From: "Edward Z. Yang" <ezyang@cs.stanford.edu>
Date: Tue, 14 Mar 2017 14:23:35 -0700
Subject: Fix haddock-test to work with latest version of Cabal.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
---
 haddock-test/src/Test/Haddock/Config.hs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/haddock-test/src/Test/Haddock/Config.hs b/haddock-test/src/Test/Haddock/Config.hs
index dea101d8..e1e920f2 100644
--- a/haddock-test/src/Test/Haddock/Config.hs
+++ b/haddock-test/src/Test/Haddock/Config.hs
@@ -237,7 +237,7 @@ baseDependencies ghcPath = do
             exitFailure
         (ifArg:_) -> pure ifArg
     ifaces pkgIndex name = do
-        pkg <- join $ snd <$> lookupPackageName pkgIndex (PackageName name)
+        pkg <- join $ snd <$> lookupPackageName pkgIndex (mkPackageName name)
         iface <$> haddockInterfaces pkg <*> haddockHTMLs pkg
     iface file html = "--read-interface=" ++ html ++ "," ++ file
 
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